Search results for "Geta"

Spot spraying in oilseeds and protein crops

2019

International audience; Currently, spraying chemical products in agriculture became the main means of weed controlbecause this cultural practice is very fast, inexpensive and very effective. However, awarenessof their negative impacts (environment, human health) requires thinking about new technicaland agronomic solutions. New technologies are promising techniques for a site-specific weedmanagement through the development of localized spraying.Some sprayers (often small width) located on the row may be able to answer thoseexpectations but they are most often expensive. In this context, the objective of the project“PLEVOP” (development of spot sprayer in oilseed and protein crops), proposed …

Studio dei meccanismi di crescita dei frutti di due varietà di mango coltivate in ambiente mediterraneo

Studies on the terpene metabolism in Lavandula latifolia Medicus

2013

Resumen en castellano Estudio del metabolismo de los terpenos en Lavandula latifolia Medicus Justificación y objetivos La biosíntesis de los dos precursores universales de los terpenos vegetales, el isopentenildifosfato (IPP) y el dimetilalildifosfato (DMAPP), es un proceso complejo en el que intervienen dos rutas metabólicas independientes (Rodríguez-Concepción y Boronat, 2002; Lange y Ahkami, 2013): La ruta del mevalonato (MVA) que opera en el citosol, retículo endoplasmático y peroxisomas; y la ruta del metil-D-eritritol-4-fosfato (MEP) que opera en los plastos. La primera de ellas es la principal responsable de la biosíntesis de sesquiterpenos y esteroles mientras que la segunda lo es d…

Multitemporal Unmixing of Medium-Spatial-Resolution Satellite Images: A Case Study Using MERIS Images for Land-Cover Mapping

2011

Data from current medium-spatial-resolution imaging spectroradiometers are used for land-cover mapping and land-cover change detection at regional to global scales. However, few landscapes are homogeneous at these scales, and this creates the so-called mixed-pixel problem. In this context, this study explores the use of the linear spectral mixture model to extract subpixel land-cover composition from medium-spatial-resolution data. In particular, a time series of MEdium Resolution Imaging Spectrometer (MERIS) full-resolution (FR; pixel size of 300 m) images acquired over The Netherlands is used to illustrate this study. The Netherlands was selected because of the following: 1) the fragmenta…

The importance of long-term monitoring for inferring populations dynamics: the example of the Biovigilance French network on weeds

2014

National audience

CA-SYS: A long term experimental platform on agroecology at various scales

2018

National audience; The French National Institute for Agricultural Research (INRA) has established an ambitious, multiscale, agricultural experimental infrastructure (the CA-SYS platform) as a collaboration between the Research Unit, Agroécologie (Dijon, eastern France), and the Experimental Research Unit, Domaine d’Epoisses (20 km next to Dijon). CA-SYS covers an area of 120 ha, and is divided into 47 fields, each of which has drainage and can be irrigated, and will be initiated in autumn 2018. The aims of CA-SYS are to: i) design and evaluate new agroecological systems; ii) study the transition from current farming systems towards these new agroecological systems, with goals that include a…

Biocontrol of the parasitic plant species Phelipanche ramosa, using rapeseed rhizosphere fungi or phytotoxic metabolites they produce.

2019

Phelipanche ramosa (L.) Pomel, branched broomrape, is a major root-holoparasitic damaging weed with a large host range besides a strong adaptation to rapeseed. Broomrape seed germination is necessarily triggered by host root exudates. This ensures that they germinate close to a host root where they attach and establish a vascular connection to take up water and nutrients. No efficient broomrape management technique has been validated yet. Biocontrol could be an alternative but there is currently no biological control agent on the market. Indeed tripartite interactions between the host plant, the parasitic plant and a pathogenic agent of the latter are complex and poorly understood. The obje…

Editor in Chief. Agronomy for Sustainable Developmen

2012

PROD,2012-9 EA SAR CICAP UMR HORS POLE CT1 Enjeu2 INRA; International audience

The role of models for multicriteria evaluation and multiobjective design of cropping systems for managing weeds

2014

Reconciling pesticide reduction with economic and environmental sustainability in arable

2014

National audience